The FDTU is an LRU designed for use in Mi-17 helicopter, IL-76 and IL-78 aircraft for recording flight data.  This LRU operates in parallel with the existing Flight Data Recording System (FDR). The FDTU collects the stream of data from the existing Flight Data Acquisition Unit, decodes and records the same onto a removable compact flash memory (Compact Flash Card).

Post flight the CFC is removed from the FDTU and transferred to ‘Ground Station Analysis System’ which hosts the application software, for analysis and reporting